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The washer runs constantly and water comes from the trigger

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Black and decker pressure washer I pull the trigger water comes out for a few seconds then its like your constantly pulling the trigger on and off. it dies then fires back up and so it goes on and on.


Sounds like you have air in the system somewhere. When the same symptoms happened to me, I learned upon inspection that I'd inadvertently burnt a hole in the hose.

Apr 07, 2017 | Water Garden

2 Answers

Why does the motor run when I do not pull the trigger of the gun after the high pressure washer is turned on? The motor is supposed to run only if the trigger of the gun is pulled and shuts off when the...


When water is running through system, the motor has to run to keep the pressure built up. So, if the water is leaking out, the motor think it needs to keep running to keep the pressure built up. The leak needs to be fixed to the motor will not run constantly.

Jun 16, 2014 | Karcher PSI Electric Pressure Washer

2 Answers

Honda 160 homelite pressure washer 2700 psi no pressure


Water comes out the nozzle, but low pressure? ( more than when the motor is not running)
I would check the check valves and the unloader.
If the amount of water coming out the nozzle is the same when the motor is running or not running.
Either the key that connects the motor shaft to the pump shaft is sheared, or the pump is trash.
No water comes out the nozzle would indicate a clogged inlet filter or blockage at the gun valve or nozzle.

May 05, 2014 | Homelite Pressure Washer. Honda 2700 psi...

1 Answer

Have a Karcher kb4040 that continues to run constantly even when the trigger isnt pressed. Also water flows out of the detergant hose when im not pressing the trigger. Pressure seems down slighlty, not...


This is two things. One is the back flow check valve to the soap line is leaking. The other is the pressure switch on the output side of the pump.

Oct 13, 2012 | Garden

2 Answers

HOW DO I DRAIN THE WATER FROM MY HP WASHER FOR WINTER


What I've always done is just disconnect the water hose then start the washer and pull the trigger till no more water comes out. You don't want to run it very long at all after there's no more water though, you can quickly overheat the pump if it is ran without a water supply for too long. I've been doing this for the past 3 years with one of my washers and haven't had any problems with the pump.

Oct 05, 2012 | Powerboss 020309 3000 psi 2.5...

1 Answer

Won't stay running


Pressure washer when you first try to start them that stop underload. We had the same type of problem with 11 hp Honda if you hold the trigger open the motor will be under less load we found by running the motor for about a minute it would work normally. Remember to make sure the water hose is turned on pull the trigger on, until water is coming out of the wand , now try and start the motor but also hold the trigger open, now you will not be building maximum pressure, after about a minute release the trigger and see if it keeps running.

Feb 19, 2011 | Briggs & Stratton 2200 PSI Gas Pressure...

1 Answer

Engine runs , not getting any water flow when trigger pressed.


Disconnect hoses.
Look for kink in water hose.
Check incoming water connection for filter washer
Replace filter washer
If you don't have a filter washer, put one in.
Hook up water, and turn on
Water should come out other side of pump.
Turn on machine.
Do you get pressured water out of pump.
If no pressure, then pump is suspect
Hook up washer hose without gun
Does pressure come out of washer hose
Finally, the gun trigger may be bad.

We had to buy guns now and then.
Search for pressure washer guns
Following link shows guns we used:
http://www.ultimatewasher.com/pressure-washer-trigger-guns.htm

Oct 25, 2010 | Karcher G2650HHR Gas Pressure Washer

1 Answer

Hello there.My Karcher pressure washer motor constantly runs with no pressure coming out of trigger gun.I have tried another gun with the same result.The motor should stop/start when you press gun.The...


The valve that admits more water to be compressed is stuck. It is likely the O-Rings on it need replacing. No water to the pump, no pressure!

The motor will stop when pressure is up to the designed pressure.

Oct 03, 2009 | Karcher Garden

1 Answer

Mi TM 2700 pressure washer has no pressure.


With the water on, to the washer and the unit running. Does the water come out at the same rate before the trigger as at does after the trigger (run test with spray nozzle removed). Its not impossible for unloader valve to be bad but it usually is a dependable component. Make sure the unit has the air purged from it properly before start-up, make sure there are no obstructions before the trigger, then the nozzle. The unloader valve just puts the pump into by-pass until the trigger is depressed.

Apr 10, 2009 | Mi T M WP-2700-4MHB Pressure Washer

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